21483170 has 16 divisors (see below), whose sum is σ = 39200760. Its totient is φ = 8475264.

The previous prime is 21483169. The next prime is 21483191. The reversal of 21483170 is 7138412.

It can be written as a sum of positive squares in 4 ways, for example, as 20857489 + 625681 = 4567^2 + 791^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13985 + ... + 15444.

Almost surely, 2^21483170 is an apocalyptic number.

21483170 is a deficient number, since it is larger than the sum of its proper divisors (17717590).

21483170 is a wasteful number, since it uses less digits than its factorization.

21483170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29509.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 21483170 is about 4634.9940668786. The cubic root of 21483170 is about 277.9923138499.

The spelling of 21483170 in words is "twenty-one million, four hundred eighty-three thousand, one hundred seventy".